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import { AssetBuyer, AssetBuyerError, BuyQuote } from '@0x/asset-buyer';
import { AssetProxyId } from '@0x/types';
import { BigNumber } from '@0x/utils';
import { Web3Wrapper } from '@0x/web3-wrapper';
import * as _ from 'lodash';
import * as React from 'react';
import { connect } from 'react-redux';
import { Dispatch } from 'redux';
import { ERC20AssetAmountInput } from '../components/erc20_asset_amount_input';
import { Action, actions } from '../redux/actions';
import { State } from '../redux/reducer';
import { ColorOption } from '../style/theme';
import { ERC20Asset, OrderProcessState } from '../types';
import { assetUtils } from '../util/asset';
import { BigNumberInput } from '../util/big_number_input';
import { errorFlasher } from '../util/error_flasher';
export interface SelectedERC20AssetAmountInputProps {
fontColor?: ColorOption;
startingFontSizePx: number;
}
interface ConnectedState {
assetBuyer?: AssetBuyer;
value?: BigNumberInput;
asset?: ERC20Asset;
isDisabled: boolean;
}
interface ConnectedDispatch {
updateBuyQuote: (assetBuyer?: AssetBuyer, value?: BigNumberInput, asset?: ERC20Asset) => void;
}
interface ConnectedProps {
value?: BigNumberInput;
asset?: ERC20Asset;
onChange: (value?: BigNumberInput, asset?: ERC20Asset) => void;
isDisabled: boolean;
}
type FinalProps = ConnectedProps & SelectedERC20AssetAmountInputProps;
const mapStateToProps = (state: State, _ownProps: SelectedERC20AssetAmountInputProps): ConnectedState => {
const processState = state.buyOrderState.processState;
const isEnabled = processState === OrderProcessState.NONE || processState === OrderProcessState.FAILURE;
const isDisabled = !isEnabled;
const selectedAsset = state.selectedAsset;
if (_.isUndefined(selectedAsset) || selectedAsset.metaData.assetProxyId !== AssetProxyId.ERC20) {
return {
value: state.selectedAssetAmount,
isDisabled,
};
}
return {
assetBuyer: state.assetBuyer,
value: state.selectedAssetAmount,
asset: selectedAsset as ERC20Asset,
isDisabled,
};
};
const updateBuyQuoteAsync = async (
assetBuyer: AssetBuyer,
dispatch: Dispatch<Action>,
asset: ERC20Asset,
assetAmount: BigNumber,
): Promise<void> => {
// get a new buy quote.
const baseUnitValue = Web3Wrapper.toBaseUnitAmount(assetAmount, asset.metaData.decimals);
// mark quote as pending
dispatch(actions.setQuoteRequestStatePending());
let newBuyQuote: BuyQuote | undefined;
try {
newBuyQuote = await assetBuyer.getBuyQuoteAsync(asset.assetData, baseUnitValue);
} catch (error) {
dispatch(actions.setQuoteRequestStateFailure());
let errorMessage;
if (error.message === AssetBuyerError.InsufficientAssetLiquidity) {
const assetName = assetUtils.bestNameForAsset(asset, 'of this asset');
errorMessage = `Not enough ${assetName} available`;
} else if (error.message === AssetBuyerError.InsufficientZrxLiquidity) {
errorMessage = 'Not enough ZRX available';
} else if (
error.message === AssetBuyerError.StandardRelayerApiError ||
error.message.startsWith(AssetBuyerError.AssetUnavailable)
) {
const assetName = assetUtils.bestNameForAsset(asset, 'This asset');
errorMessage = `${assetName} is currently unavailable`;
}
errorFlasher.flashNewErrorMessage(dispatch, errorMessage);
return;
}
// We have a successful new buy quote
errorFlasher.clearError(dispatch);
// invalidate the last buy quote.
dispatch(actions.updateLatestBuyQuote(newBuyQuote));
};
const debouncedUpdateBuyQuoteAsync = _.debounce(updateBuyQuoteAsync, 200, { trailing: true });
const mapDispatchToProps = (
dispatch: Dispatch<Action>,
_ownProps: SelectedERC20AssetAmountInputProps,
): ConnectedDispatch => ({
updateBuyQuote: (assetBuyer, value, asset) => {
// Update the input
dispatch(actions.updateSelectedAssetAmount(value));
// invalidate the last buy quote.
dispatch(actions.updateLatestBuyQuote(undefined));
// reset our buy state
dispatch(actions.updateBuyOrderState({ processState: OrderProcessState.NONE }));
if (!_.isUndefined(value) && !_.isUndefined(asset) && !_.isUndefined(assetBuyer)) {
// even if it's debounced, give them the illusion it's loading
dispatch(actions.setQuoteRequestStatePending());
// tslint:disable-next-line:no-floating-promises
debouncedUpdateBuyQuoteAsync(assetBuyer, dispatch, asset, value);
}
},
});
const mergeProps = (
connectedState: ConnectedState,
connectedDispatch: ConnectedDispatch,
ownProps: SelectedERC20AssetAmountInputProps,
): FinalProps => {
return {
...ownProps,
asset: connectedState.asset,
value: connectedState.value,
onChange: (value, asset) => {
connectedDispatch.updateBuyQuote(connectedState.assetBuyer, value, asset);
},
isDisabled: connectedState.isDisabled,
};
};
export const SelectedERC20AssetAmountInput: React.ComponentClass<SelectedERC20AssetAmountInputProps> = connect(
mapStateToProps,
mapDispatchToProps,
mergeProps,
)(ERC20AssetAmountInput);
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